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authorJeff King <peff@peff.net>2015-06-25 16:55:02 (GMT)
committerJunio C Hamano <gitster@pobox.com>2015-06-29 18:39:07 (GMT)
commita5481a6c9438cbd9c246cfa59ff49c31a0926fb6 (patch)
tree7992773f5ae1687c910e602b6286f3f1cbe116aa /reflog-walk.h
parentb7c1e11dc43e3dbd9eb2da20476c4c55dda5e84b (diff)
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convert "enum date_mode" into a struct
In preparation for adding date modes that may carry extra information beyond the mode itself, this patch converts the date_mode enum into a struct. Most of the conversion is fairly straightforward; we pass the struct as a pointer and dereference the type field where necessary. Locations that declare a date_mode can use a "{}" constructor. However, the tricky case is where we use the enum labels as constants, like: show_date(t, tz, DATE_NORMAL); Ideally we could say: show_date(t, tz, &{ DATE_NORMAL }); but of course C does not allow that. Likewise, we cannot cast the constant to a struct, because we need to pass an actual address. Our options are basically: 1. Manually add a "struct date_mode d = { DATE_NORMAL }" definition to each caller, and pass "&d". This makes the callers uglier, because they sometimes do not even have their own scope (e.g., they are inside a switch statement). 2. Provide a pre-made global "date_normal" struct that can be passed by address. We'd also need "date_rfc2822", "date_iso8601", and so forth. But at least the ugliness is defined in one place. 3. Provide a wrapper that generates the correct struct on the fly. The big downside is that we end up pointing to a single global, which makes our wrapper non-reentrant. But show_date is already not reentrant, so it does not matter. This patch implements 3, along with a minor macro to keep the size of the callers sane. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'reflog-walk.h')
-rw-r--r--reflog-walk.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/reflog-walk.h b/reflog-walk.h
index a9bd60e..27886f7 100644
--- a/reflog-walk.h
+++ b/reflog-walk.h
@@ -11,13 +11,13 @@ extern int add_reflog_for_walk(struct reflog_walk_info *info,
extern void fake_reflog_parent(struct reflog_walk_info *info,
struct commit *commit);
extern void show_reflog_message(struct reflog_walk_info *info, int,
- enum date_mode, int force_date);
+ const struct date_mode *, int force_date);
extern void get_reflog_message(struct strbuf *sb,
struct reflog_walk_info *reflog_info);
extern const char *get_reflog_ident(struct reflog_walk_info *reflog_info);
extern void get_reflog_selector(struct strbuf *sb,
struct reflog_walk_info *reflog_info,
- enum date_mode dmode, int force_date,
+ const struct date_mode *dmode, int force_date,
int shorten);
#endif